package org.xielei.designpatterns.behavioral.observer;

import java.util.Observable;
import java.util.Observer;

/**
 * ObserverThree
 *
 * @author xielei
 * @date 2020/8/6
 */
public class ObserverThree implements Observer {

    @Override
    public void update(Observable o, Object arg) {
        System.out.println("ObserverThree was notified");
    }
}
